I have to ask people who IPv6 this: What are the advantages of using
IPv6 right now? Specially tunneling. Is there anything I can get with
using IPv6 at this point that I can't while using IPv4? There's been
mention of wireless. Does that have anything to do with it?

Afaik nothing specific to wireless, one GOOD thing is that you have a
full public address, and you can have a public address on each machine
in your home/small shop/whatever and get rid of NAT and all the problems
it causes.

Kind of like NAT, then. Is there an IPv6 address registry? Can I acquire
a publiv IPv6 address space (even if it isn't routeable right now)? I'm
assuming that IPv6 isn't being routed right now and most people just
tunnel. (I'll have to ask my ISP).